package com.itheima.jobs;

import com.itheima.constant.RedisConstant;
import com.itheima.utils.QiniuUtils;
import org.springframework.beans.factory.annotation.Autowired;
import redis.clients.jedis.JedisPool;

import java.util.Set;

//自定义Job,实现定义清理垃圾图片
public class ClearImgJob {

    @Autowired
    private JedisPool jedisPool;

    public void clearImg(){
        //根据redis中保存的两个set集合差值计算，获得垃圾图片的集合
        Set<String> set = jedisPool.getResource().sdiff(RedisConstant.SETMEAL_PIC_RESOURCES, RedisConstant.SETMEAL_PIC_DB_RESOURCES);

        if (set!=null){
            for (String picName : set) {
                //删除云存储服务器上的图片
                QiniuUtils.deleteFileFromQiniu(picName);
                //从Redis集合中删除图片名称
                jedisPool.getResource().srem(RedisConstant.SETMEAL_PIC_RESOURCES,picName);
                System.out.println("定时任务已经执行辣~♪(^∇^*)");
            }

        }

    }
}
